First Author:   Jean-Bernard Chatelain Paris School of Economics, Université Paris I Pantheon Sorbonne, 48 Boulevard Jourdan, 75014 Paris. jean-bernard.chatelain@univ-paris1.fr         Second Author: Kirsten Ralf ESCE International Business School, INSEEC U. Research Center, 10 rue Sextius Michel, 75015 Paris Kirsten.Ralf@esce.fr